Automatic regulator for gas-heaters.



` E. E. GOLD.

AUTOMATIC REGULATOR FOR GAS HEATERS.

APPLICATION FILED NOV.27| 1915.

Patented Apr. 18; 1916.

a 0 f vnu? INVENTOR M Mm@ 4%.( ZE# )l/bym] ITNESSES:

EDWARD E. GOLD, OF NEW YORK, N.

COMPANY, OF NEW YORK,

Y., ASSIGNOR TO GOLD CAR HEATING & LIGHTING N. Y., A CORPORATION OF NEW YORK.

AUTOMATIC REGULATOR FOR GAS-HEATERS.

Specification of Letters Patent.

Patented Apr. 18, 1916.

Application led November 27, 1915. Serial No. 63,713.

To all whom t may concern Be it known that I, EDWARD E. GOLD, a citizen of the United States of America, residing inthe borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Automatic Regulators for Gas- Heaters, of which the following is a speciication.

My invention relates to automatic means for controlling the supply of gas to a gas heater, and has for its object to regulate the supply of gas to said heater in accordance with the thermostatic conditions prevailing in the apartment to be heated, whereby the Waste of gas will be prevented.

The invention will be found particularl'iv advantageous for use in heating garages where it is desired to maintain sufficient heat at all times to prevent the water freezing in the automobiles. It also may be advantageously used in many other places;

My invention consists in the combination of parts hereinafter mentioned and described.

A desirable form in which my invention may be embodied is illustrated in the accompanying drawing, wherein Figure 1 is a view. partly in section, illustrating my improved regulating apparatus: Fig.. 2 is a top view thereof; Fig. 3 is an end view looking from the left, Fig. l. partly broken and parts being shown in section, and Fig.' 4 is an elevation of my invention illustrating it in Ause with a gas heater. y

I have illustrated my invention as applied to a gas heating system for the purpose of regulating the feed of gas to the gas heater A. The supply pipe B is connected to a valve casing C within which is a valve D for controlling the flow of gas through the Supply .pipe B. This valve is illustrated asa cone-shaped valve, and the valve seat'E has a correspondingly coneshaped seating surface. The .Valve is borne by a valve stem F, one end of which has an extension f in the valve casing. A spring g bears against thecasing at one side, and at the other side against a collar g1 fixed on the valve stem, and tends to hold the valve D normallyr open. On the other side of the valve D the stem F has an extension f1 which passes through an opening of in the which projects into a recess G g casing C into an expansible vessel H. This expansible vessel has .its outer end closed by 4a spacer block I which is secured thereto, and at its inner end has an opening through which the valve stem F passes, and it is secured gas-tight to the valve casing C around said opening.

It will be perceived from the foregoing that the expansible vessel H is at all times filled with gas, and that it provides an elastic connection between the valve-operating means and the valve whereby the valve may be freely operated toward and from its seat and no leakage of gas will occur, and at the same time. the usual gland or other packing is dispensed with. By this means, therefore, vthe operation of the valve D is very much simplified, as the same may be. easily moved, and the employment of the expansible vessel H enables me to dispense with the friction upon the valve stem F usually met with where a packing is employed to prevent the leaking of gas. This also .enables me to employ a very light spring y, and consequently very slight power in the operating means is sufficient.

The operating means employed by me to operate the gas valve D are thermostatic operating means, and are so located and disposed that they are affected by the temperature in the surrounding atmosphere. which is the tenlperature of the apartment to be heated, whereby as the said temperature grows warmer the thermostat will 0perate to expand and close the valve D and thereby shut off the supply of gas until the temperature in the apartment isv lowered.V

whereupon the contraction of the ,thermostat will permit the spring g to open the valve D and permit a further supply of gas to pass to the gas heater A.

For the purpose of at all times maintain- I ing a slight flame in the gas heater A, a. bypass J is provided through which the passage of gas is controlled by an adjustable needle valve The particular type of thermostat employed by me, according to my' invention. for the purpose of operating the valve l), is well` adapted for this purpose. The said thermostat, as illustrated, comprises a plurality of expansible and contractible vessels K. These are preferably made of some spring metal, such as lphosphor bronze, and contain a small quantity of volatile fluid,

such as ethel ehlorid, alcohol, or other iuid the precise nature of which depends upon the range of temperatures desired to be maintained in the apartment, as different fluidsare known and available which are capable of condensing and volatilizing at various extreme temperatures, and are therefore available for maintaining. a different range of temperatures in the apartment.

forated to receive the studs L, and rest onV one side against the spacers I, Il, and on the other side against lthe heads Z of the threaded studs L. A frame N is employed to aid in supporting Vthe diaphragme, and this frame is mounted upon an extension ffl of the valve casing C and 'is held thereon by a nut n. At its outer end the frame is perforated to permitthe passage of a supportin adjustment bolt O which is perforate at its end to receive a threaded stud L and is adjusted and held in position by nuts o, 01 on each side of the frame N. The said adjusting screw Serves both to support the diaphragms K and to adjust them in position toward and from the valve stem F. The spacer I which is interposed between the expansible vessel H and the end diaphragm K is secured, as stated, directly to the expansible vessel, and serves to close the opening in the end thereof. One side of the spacer receives the thrust of the valve stem, and at the other side it receives the -end of the diaphragm K of the series of connected diaphragms, sorthat as the diaphragms expand the motionthereof is communicated through the spacer I to the valve stem, and as the diaphragms contract the spring g will keep the valve stem at all times in contact with the outer end of the spacer I.

I .have illustrated. as vpart of my invention a desirable construction of parts permitting the easy removal of the parts for repair and replacement. The recess G in the valve casing C is formed in a plug G1, and this plug is screwed in the valve casing so as to be removable therefrom as desired. The valve seat 'E is likewise removable from the casing by unscrewing. and its size is such that it will readily pass out through the opening in which the plug G1 is screwed. This permits the removal of the valve D and its connected stem, which are then free.

The frame N within which the thermobeing altered. Upon a retraction of the said bolt O the springr g will tend to further exf' pand the expansible vessel H which fis/preferably formed of metal similar tthat in the -diaphragms `K, and w-illkeep the valve stem Fin proper position relative to the spacer I. It will be apparent, however, that in such case the thermostat 4will be capable of a greater expansion before closing the valve. Therefore, the said adjusting meansl provide for a variation in the temperature to be maintained in' the apartment by varying the degree of expansion at which the thermostat will operate the valve. and therefore permitting the thermostat to operate the said valve at varying temperatures.

I have illustrated in the accompanying r drawings the most desirable manner of constructing my invention now known to me. but desire it to be understood that my invention is not in all respects limited to the precise construction shown, as modifications may be made thereto within Vthe limits of the appended claims.

What I claim is 1. An automatic regulator for gas heaters, comprising a gas supply pipe, a 'valve casing, a valve therein, a removable valve seat, a valve stem freely mounted in said casing and having one end projecting throughl an opening therein, an elastic vessel secured gas-tlght to the casing around said opening, the end of said valve stem extending in to said elastic vessel and into operative relation W'ith the closed rear Wall thereof but separable therefrom, a' thermostat adapted to be affected by the 'temperature of the surrrounding atmosphere and a connection between said thermostat and said elastic vessel, whereby the expansion of said thermostat is operatively exerted upon said valve stem and a spring adapted to hold said valve/ normally open and said valve stem in operative relation to said thermostat, said valve and its stem adapted to be removed upon the removal of said valve seat.

2. An automatic regulator for gas heaters comprising a gas supply pipe, a valve casing, a valve therein, a removable valve seat, a valve stem freely mounted in said casing and. having one end projecting through an opening therein. an4 elastic vessel secured gas-tight to the casing around' said opening, the end of said valve stem cxtending into said elastic vessel and into operative relation with the closed rear wall thereof, but separable therefrom, a plurality 

